Metric field as emergence of Hilbert space

Abstract First, we explain some ambiguities of spacetime and metric field as fundamental concepts. Then, from the Unruh effect point of view and using the Gelfand–Naimark–Segal construction, we construct an operator as a quanta of acceleration that we call quantum acceleration operator (QAO). Thereu...

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Main Authors: Maysam Yousefian, Mehrdad Farhoudi
Format: Article
Language:English
Published: Nature Portfolio 2025-02-01
Series:Scientific Reports
Online Access:https://doi.org/10.1038/s41598-024-82851-4
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author Maysam Yousefian
Mehrdad Farhoudi
author_facet Maysam Yousefian
Mehrdad Farhoudi
author_sort Maysam Yousefian
collection DOAJ
description Abstract First, we explain some ambiguities of spacetime and metric field as fundamental concepts. Then, from the Unruh effect point of view and using the Gelfand–Naimark–Segal construction, we construct an operator as a quanta of acceleration that we call quantum acceleration operator (QAO). Thereupon, we investigate the relation between the vacuum of two different frames in the Minkowski space. Also, we show that the vacuum of each accelerated frame in the Minkowski space can be obtained by applying such a QAO to the Minkowski vacuum. Furthermore, utilizing these QAOs, we augment the Hilbert space and then extract the metric field of a general frame of the Minkowski spacetime. In this approach, these concepts emerge from the Hilbert space through the constructed QAOs. Accordingly, such an augmented Hilbert space includes quantum field theory in a general frame and can be considered as a fundamental concept instead of the classical metric field and the standard Hilbert space.
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issn 2045-2322
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spelling doaj-art-0261f58607494f029843b258ff1d81262025-02-09T12:37:38ZengNature PortfolioScientific Reports2045-23222025-02-011511810.1038/s41598-024-82851-4Metric field as emergence of Hilbert spaceMaysam Yousefian0Mehrdad Farhoudi1Department of Physics, Shahid Beheshti UniversityDepartment of Physics, Shahid Beheshti UniversityAbstract First, we explain some ambiguities of spacetime and metric field as fundamental concepts. Then, from the Unruh effect point of view and using the Gelfand–Naimark–Segal construction, we construct an operator as a quanta of acceleration that we call quantum acceleration operator (QAO). Thereupon, we investigate the relation between the vacuum of two different frames in the Minkowski space. Also, we show that the vacuum of each accelerated frame in the Minkowski space can be obtained by applying such a QAO to the Minkowski vacuum. Furthermore, utilizing these QAOs, we augment the Hilbert space and then extract the metric field of a general frame of the Minkowski spacetime. In this approach, these concepts emerge from the Hilbert space through the constructed QAOs. Accordingly, such an augmented Hilbert space includes quantum field theory in a general frame and can be considered as a fundamental concept instead of the classical metric field and the standard Hilbert space.https://doi.org/10.1038/s41598-024-82851-4
spellingShingle Maysam Yousefian
Mehrdad Farhoudi
Metric field as emergence of Hilbert space
Scientific Reports
title Metric field as emergence of Hilbert space
title_full Metric field as emergence of Hilbert space
title_fullStr Metric field as emergence of Hilbert space
title_full_unstemmed Metric field as emergence of Hilbert space
title_short Metric field as emergence of Hilbert space
title_sort metric field as emergence of hilbert space
url https://doi.org/10.1038/s41598-024-82851-4
work_keys_str_mv AT maysamyousefian metricfieldasemergenceofhilbertspace
AT mehrdadfarhoudi metricfieldasemergenceofhilbertspace